hints on submitting files from a website back to svn repository inside office LAN by scripts?

The problem:
I have a website files with a variety of files on them, php, cgi (mod_perl),
html, javascipt, postgresql
scripts etc, all on a dedicated server and they get changed by many
different types of users, webmasters, designers, support staff, data entry
personnel and I have no way to get them, and the different tools they are
using, to all go through a svn repository. But I would now like to use svn
to track those changes 'after the fact' so to speak. I do know this is a bit
like trying to close the gate after the horse has bolted .... but, it's the
best in an undesireable situation.

Hoped for benefits:

- be able to follow the history of changes and generate reports

- be able to reverse any 'bad' changes if things have been broken

- rudimentary unauthorized changes detection tool

Questions:

- has anybody done this and are either scripts or notes about this sort of
strange scm setup available online or on request?

- how would you solve this task from a security viewpoint? Would it be more
adviseable to remotely 'sshfs' mount the webservers filesystems from the
internet back to the svn repository server on our offcie LAN and then have
the svn checkin script run against those 'local' sshfs-files, rather
than it running on the webserver and submitting back to the svn repository
server inside our office network inside an ssh tunnel?

Regards,

-- 
Urs Rau						
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